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Audio menu
Speaker:
controls whether both the internal and external speakers (sound bar, etc.) or just external speakers are used.
Options include: Internal (both internal and external speakers operate) and External (only external speakers operate).
Default Internal.
Audio Source:
selects the audio input source. Options include: HDMI A, HDMI B, Lightcast, Audio 1, and Audio 2.
Audio Reset:
resets all Audio menu items to factory default settings. Options: Yes and No.
